This is nice on some levels, and they document their goals well (basically, to have features in one language that would otherwise require several). But I think

This is nice on some levels, and they document their goals well (basically, to have features in one language that would otherwise require several). But I think they should have started by investing in Python itself. While they wouldn't have their desired features "today", they'd have been working with a much larger audience. This would have led to more contributions in terms of PEP comments and feasibility testing, and ultimately more programmers benefiting from the new features.